How do I stop the gallery thumbnails from fading in when they load?

I am using the Jasper Template on the following site: www.mySC3limestone.org.

The gallery thumbnails are used as buttons for people to click, but for some reason they slowly fade in, as opposed to images that are on the page that load automatically.

I have to use the gallery thumbnails because then I can display it on mobile as 2 wide, whereas if I just use images, it will stack the images, which I don't want.

Does anyone know if there's a way to stop the gallery thumbnails from fading in and instead just appearing automatically?

Hey, try adding this code to the Custom CSS section:

.sqs-block-gallery .slide img {
 opacity: 1 !importat;
}

If it doesn't work, try a more detailed selector

Note: adding the code to the custom CSS will affect all galleries on the website.